Veneer-sawing machine.



PATBNTED FEB.18, 1908. J. PARROW.

VENEE SAWING MACHINE.

APPLIOATION P ILED OUT. 31. 1904. RENEWED. NOV. 18, 1967.

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UNITED STATES PATENT OFFICE.

JOHiN FARROW, or COVINGTON, KENTUCKY, AssIcNo or ONE-HALF TO GEORGE ROWEAND JAMES A. TRUNNELL, or CINCINNATI, OHIO.

VENEER-SAWING MACHINE.

Specification of Letters Patent.

Patented Feb. 18,1903.

Application filed October 31 1904. Serial No. 230.779- Renewed November18. 1907- Serial No. 402.744.

To all whom it may concern:

Be it known that 1, JOHN FARROW, a citizen of the United States,residing in Covington, county of Kenton, and State of Ken tucky, haveinvented certain new and useful Improvements in Veneer-Sawing Machines.of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming part of thisspecification.

In the construction of apparatus for sawing veneers, it has heretoforebeen practicable to saw only one log at a time, and in addition, whenthe log has been cut down to about two inches in thickness, no furtherveneers can usually be cut therefrom. In the ordinary constructions, thelog is held in the carriage by dogs, which grasp and secure the log asnear the edge as possible so as not to interfere with the saw, but whenthe timber is cut down to about two inches in thickness, the lateralvibration of the comparatively thin plank and the pressure of theretaining dogs at top and bottom, causes the timber to buckle and bulgeout, so that no further veneers can be out.

My improvements relate to devices for pre venting this vibration andbuckling of the timber, and by the use of which not only can single logsbe cut down within a very small portion of an inch of the dogs, but inwhich two logs can be sawed into veneers at the same time, and thus inboth respects the capacity of the machine can be very largely increased.

In the drawings Figure 1 is a plan view of my improved clamp, showingsuch portion of the carriage for the timbers as will illustrate theoperation of the device. Fig. 2 is a side elevation of same. Fig. 3 is adetail cross section of the clamp taken on the line 0cr 01 Fig. 2.

1 represents the framework of the carriage for supporting the timbers tobe fed to the veneer saw 2, which projects through the floor of the millin the usual way. This carriage frame is provided with flanged wheels 33shown in dotted lines in Fig. 2, which wheels ride on the track 4, sothat the framework can be advanced to the saw to cut the veneers.

5 5 represents the upper portion of the carriage, which is mounted onthe rails or guides 6, of the lower portion of the framework, so thatthe upper portion can be shifted laterally the required distance to cutthe Veneers successively from the timbers.

77 are pulleys mounted on the upper portion of the framework connectedby the cord 8, and 9-9 are shafts on these pulleys, which are soconnected with a hand wheel, not shown, that the upper portion of thecarriage can be advanced laterally to present the timbers for thecutting of the veneer strips,

10, 11 represent the timbers from which the veneers are out, which aresecurely clamped to the upper portion of the carriage by the dogs 12,operated by the screws 13.

All the above briefly described construe? tion, with the exception ofthe two logs 10 and 11, is old and well-known, and we have, therefore,not considered it necessary to illustrate or describe at any greaterlength. 'With this old construction, in the first place, only one logcan be sawed at a time, because if two logs were secured in the carriageone above the other as soon as they were partially cut away, thepressure of the dog clamps would cause the timbers to bend or turnoutward on the line of support between them.

In the second place even with one log, whenthe veneering has been cutaway to leave a plank of about two inches in thickness, with a log ofordinary diameter, the width becomes too great to withstand thepressure, so that the timber bends lengthwise and lateral vibration alsoprevents any further cutting of the plank. All. these objections areobviated with the use of my improvements.

14 is a post rigidly secured in the floor of the mill in proper positionwith reference to the saw 2, which it will be understood also is fixedin position. Bolted, or otherwise rigidly secured, to this post 14 isthe frame 1516.

17 is a substantial pressure board, or plate,

preferably of metal, which is pivoted at 18 to clamping pressure isbrought to bear upon the timbers a short distance in advance of the cutof the saw, and as the timber carriage is advanced to cut the veneer,the timber slide under the pressure plate maintaining a constant andeven pressure thereon to prevent anybulging or lateral vibration. WViththis pressure board thus located not only. can two logs be cutsimultaneously, but in as much as there is a front support for thematerial we can continue to cut oil veneers until within a sixteenth ofan inch of the dogs, which hold the logs in the carriage. As sufiicientgrasp can be obtained for the dogs within an inch of the edge, where thelogs are supported in front by the pressure board, the logs can be cutto leave a strip only a little .over an inch in thickness.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is:

1. In a veneer sawing machine, the combination with a movable carriagesupporting the timbers to be cut, of a support, and a pressure platecomparatively thin in proportion to its width and length, with pivotalconnection therefor to said support on an aXis parallel to its width,and arranged to contact With the face of the timbers to be cut,substantially as described.

2. in a veneer sawing machine, the combination with a movable carriagesupporting the timbers to be cut, of a support, and a pressure platecomparatively thin in proportion to its width and length, with pivotalconnection therefor -to said support on an axis parallel to its width,and arranged to contact with the face of the timbers to be cut, withmeans for adjusting the pressure of said plate, substantially asdescribed.

3. In a veneer sawing machine, the combination with the movable carriagesupporting the timbers to be cut, of a fixed support, a pressure platepivoted to said support and arranged to contact with the face of thetimbers to be cut, a screwmounted on said support with slot in thepressure plate, and a nut in said slot engaged by said screw wherebythepressure of said plate may be regulated, substantially as described.

JOHN FARROW. Witnesses:

ALFRED M. ALLEN, LEE STRAUSE.

